Remove an unlikely to be implemented TODO

PiperOrigin-RevId: 569893150
Change-Id: I9568b41cc9f89655811d3bff4ae9ff9bfe2ec460

src/java_tools/buildjar/java/com/google/devtools/build/buildjar/javac/plugins/dependency/ImplicitDependencyExtractor.java

@@ -22,7 +22,6 @@
 import java.nio.file.Path;
 import java.util.Map;
 import java.util.Set;
-import javax.lang.model.util.SimpleTypeVisitor7;
 import javax.tools.JavaFileObject;
 
 /**
@@ -37,7 +36,6 @@ public class ImplicitDependencyExtractor {
   /** Map collecting dependency information, used for the proto output */
   private final Map<Path, Deps.Dependency> depsMap;
 
-  private final TypeVisitor typeVisitor = new TypeVisitor();
   private final Set<Path> platformJars;
 
   /**
@@ -63,12 +61,6 @@ public ImplicitDependencyExtractor(Map<Path, Deps.Dependency> depsMap, Set<Path>
    */
   public void accumulate(Context context, Set<ClassSymbol> roots) {
     Symtab symtab = Symtab.instance(context);
-
-    // Collect transitive references for root types
-    for (ClassSymbol root : roots) {
-      root.type.accept(typeVisitor, null);
-    }
-
     // Collect all other partially resolved types
     for (ClassSymbol cs : symtab.getAllClasses()) {
       // When recording we want to differentiate between jar references through completed symbols
@@ -131,8 +123,4 @@ public static Path getJarPath(JavaFileObject file) {
       throw new LinkageError(e.getMessage(), e);
     }
   }
-
-  private static class TypeVisitor extends SimpleTypeVisitor7<Void, Void> {
-    // TODO(bazel-team): Override the visitor methods we're interested in.
-  }
 }